A dirty fuel oil filter element can be detected by ()
A. Visual inspection of the element
B. the pressure drop cross the filter
C. high fuel oil tank temperature
D. increase flow rate from the filter
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甲亢患者出现突眼征的比例为()
A. 70%~80%
B. 60%~70%
C. 50%~60%
D. 40%~50%
E. 30%~40%